4KTG

Crystal structure of double-helical GGC-repetitive RNA 19mer complexed with RSS p19

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6	291	1.8 M ammonium sulfate, 0.1 M MES, pH 6, VAPOR DIFFUSION, HANGING DROP, temperature 291K

Crystal Properties
Matthews coefficient	Solvent content
2.19	43.84

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 91.088	α = 90
b = 91.088	β = 90
c = 148.03	γ = 120

Symmetry
Space Group	H 3 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	CCD	ADSC QUANTUM 315r			M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID23-1	0.9793	ESRF	ID23-1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	Net I Over Average Sigma (I)	Redundancy	Number Reflections (All)	Number Reflections (Observed)	Observed Criterion Sigma (F)	Observed Criterion Sigma (I)	B (Isotropic) From Wilson Plot
1	1.92	40	99.4	0.089	14.8	3.7		18255

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.92	1.99	98.1		0.459		2.3	1779

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	1.92	15	18238	933	99.09	0.1924	0.1903	0.2347	RANDOM	51.363

Temperature Factor Modeling
Anisotropic B[1][1]	Anisotropic B[1][2]	Anisotropic B[1][3]	Anisotropic B[2][2]	Anisotropic B[2][3]	Anisotropic B[3][3]
1.16	1.16		1.16		-3.77

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.948
r_dihedral_angle_4_deg	23.525
r_dihedral_angle_3_deg	15.87
r_dihedral_angle_1_deg	6.123
r_mcangle_it	5.198
r_mcbond_it	4.165
r_mcbond_other	4.159
r_angle_other_deg	2.259
r_angle_refined_deg	1.847
r_chiral_restr	0.138

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.948
r_dihedral_angle_4_deg	23.525
r_dihedral_angle_3_deg	15.87
r_dihedral_angle_1_deg	6.123
r_mcangle_it	5.198
r_mcbond_it	4.165
r_mcbond_other	4.159
r_angle_other_deg	2.259
r_angle_refined_deg	1.847
r_chiral_restr	0.138
r_bond_refined_d	0.017
r_gen_planes_refined	0.011
r_bond_other_d	0.002
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	982
Nucleic Acid Atoms	834
Solvent Atoms	126
Heterogen Atoms	15

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
REFMAC	refinement
PDB_EXTRACT	data extraction
ADSC	data collection
HKL-2000	data reduction
HKL-2000	data scaling
REFMAC	phasing

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.